The new Cocoa event dispatcher made apparent some deficiencies in the
way the dialog helpers were being hidden. In particular, we would not stop
a dialog helper's modal loop when closing the dialog, resulting in the
auto-tests hanging. Also, since the QApplication event loop is runnig with
[NSApp run] in the stack, the previous workarounds are no longer needed.
Task-number: QTBUG-24321
Change-Id: Ifba713c286638d78a699c319a15683d09714f06f
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
df7944e7d7